Which country has the longest combined land border?

Russia
United States
Brazil
China
China's combined land border measures 22,117 km (13,743 mi) from the mouth of the Yalu River to the Gulf of Tonkin. China borders 14 nations, more than any other country except Russia, which also borders 14.
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Answers by country

Russia
United States
Brazil
China
answers
flagSpain
38%
15%
0%
46%
13
flagRepublic of Ireland
52%
4%
0%
42%
21
flagIndia
35%
25%
0%
39%
51
flagPakistan
50%
20%
0%
30%
10
flagPoland
54%
12%
6%
26%
14109
flagthe United Kingdom
52%
18%
2%
26%
142
flagAustria
50%
13%
10%
26%
30
flagUnknown
50%
15%
7%
26%
26
flagGreece
48%
27%
0%
24%
29
flagGermany
56%
14%
4%
23%
137
flagthe Netherlands
45%
25%
10%
20%
20
flagthe United States
47%
25%
6%
19%
255
flagAustralia
65%
13%
0%
17%
29
flagIsrael
41%
33%
8%
16%
12
flagFrance
78%
0%
7%
14%
14
flagItaly
60%
26%
0%
13%
23
flagSwitzerland
61%
30%
0%
7%
13
flagCanada
68%
25%
0%
6%
16